How old the rock is
thats my answer
Answer:
Africa to Middle east to Asia and to Oceania and then to Eurasia and to America.
Explanation:
- The human migration started around 2 million years ago form the continent of Africa, the early humans crossed the land bridges that were covered by water.
- The population of the early homo sapiens migrated to Europe between the 130,000 and 115,000 million years ago. Reaching china through the nile valley and heading to the middle east into modern Israel by the Strait on the Red Sea at the time sea level was much lower and narrow.
- <u>The migration continued through Asia to the southeastern coast and entering the Australia 50,000 years ago. At the time of the last glacial maximum. Also, the coastal population around the southeast Asia grew with the dispersal of the humans giving rise to the old and the new world i.e America.
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- Paleo Indians emerged for central Asia crossing the Beringia land bridge between the eastern Siberia and present-day Alaska. Continued by the end of the last glacial peroid i.e 23,000 years BP.
Answer:
C). Corundum
Explanation:
Corundum is a crystalline type of aluminum oxide that usually contains iron, titanium, vanadium and chromium traces. Corundum is an incredibly durable and hard material. It is the third hardest mineral, after moissanite and diamond.
A geologist determine that a sample of a mineral can’t be scratched by a steel naill but can be scratched by a Masonary drill bit. Based on this information, the sample mineral has to be softer than CORUNDUM.
Due to Corundum's hardness , it can scratch almost every other mineral, and Since corundum is harder than the drill bit of masonry that can smash the mineral sample and thus the mineral sample must be softer than corundum.
